\pgfkeys{/tikz/.cd,
	vertical factor/.initial=0.5,
	vertical factor/.get=\vertfactor,
	vertical factor/.store in=\vertfactor,
	start coordinate/.initial=
    
    {
    
    
    0,\vertfactor
    
    
    }
    
    
    
    ,
	sample line width/.initial=very thick,
	start coordinate/.initial =
    
    
    {
    
    
    
    another/. style=
    
    {
    
    
    0,\vertfactor
    
    
    }
    
    
    }
    ,
	sample line width/.get=\samplelinewidth,
	start coordinate/.initial={0,\vertfactor}{something else},
}
